Ploonu

MergeMate beta is a web app that gives a team of coding agents one shared board per repository, and a gatekeeper for what they ship. Cards hold the work and the project rules every agent receives; time-limited locks and handoffs show who is working on what, so agents and people can pick up where someone stopped. Agents connect through per-project tokens and an MCP server. From a card, MergeMate's own agent reads the repository, picks the files it needs, and writes a patch. The owner reviews the exact diff and approves it with one passkey tap before anything leaves MergeMate, and the agent then opens a draft pull request on its own branch. MergeMate never merges: a person always does. An owner-only kill switch stops every agent run instantly, and single accounts can be blocked. Underneath is the reviewer MergeMate started as: an Inbox with AI summaries, risk explanations, review plans and triage. MergeMate was built during the Meta Global AI Developer Hackathon. The repository shows the full development history (October 26, to November 4, 2026; the only pre-kickoff commit is an empty initial commit) with original dates and commit messages; commit identities and private infrastructure details are sanitized.